Installation guide

Chapter 3. Installing and Configuring Red Hat Cluster Suite Software 51
8. Choose File => Save to save the changes to the cluster configuration.
3.7.2. Adding a Member to a Running Cluster
The procedure for adding a member to a running cluster depends on whether the cluster
contains only two nodes or more than two nodes. To add a member to a running cluster,
follow the steps in one of the following sections according to the number of nodes in the
cluster:
• For clusters with only two nodes —
Section 3.7.2.1 Adding a Member to a Running Cluster That Contains Only Two Nodes
• For clusters with more than two nodes —
Section 3.7.2.2 Adding a Member to a Running Cluster That Contains More Than Two Nodes
3.7.2.1. Adding a Member to a Running Cluster That Contains Only
Two Nodes
To add a member to an existing cluster that is currently in operation, and contains only two
nodes, follow these steps:
1. Add the node and configure fencing for it as in
Section 3.7.1 Adding a Member to a Cluster.
2. Click Send to Cluster to propagate the updated configuration to other running nodes
in the cluster.
3. Use the scp command to send the updated /etc/cluster/cluster.conf file
from one of the existing cluster nodes to the new node.
4. At the Red Hat Cluster Suite management GUI Cluster Status Tool tab, disable each
service listed under Services.
5. Stop the cluster software on the two running nodes by running the following com-
mands at each node in this order:
a. service rgmanager stop
b. service gfs stop, if you are using Red Hat GFS
c. service clvmd stop
d. service fenced stop
e. service cman stop
f. service ccsd stop